锌银贮备电池贮存失效模式与失效机理探讨

Discuss on disabled mode and disabled mechanism after dry reserve of silver-zinc reserve battery

在对锌银贮备电池的结构、贮存失效模式与失效机理进行分析的基础上,进行了两种锌银贮备电池的干态检测、干态解剖和电池组放电,通过分析和电池组实效贮存试验结果,得到锌银贮备电池贮存失效的主要原因是电性能下降,主要体现在电压下降和容量损失的初步结论。而电性能下降的主要原因是正极板AgO含量的降低和Ag2O含量的增加、负极板Zn含量的降低和ZnO含量的增加及隔膜性能的降低。

On the basis of analyzing structure, disabled mode and disabled mechanism after dry reserve of silver-zinc reserve battery, dry test, dry dissection and discharge of two kinds of batteries were pursued. By analysis and actual experiment result, the elementary conclusion was found. The primary disabled reason after dry reserve of silver-zinc reserve battery was the decline of electrical capability. The decline of electrical capability included the fall of voltage and the loss of capacity. The pdmary reasons of the decline of electrical capability were the decrease of AgO content and the increase of Ag2O content in silver electrode, the decrease of Zn content and the increase of ZnO content in zinc electrode and the decline of membrane capability.